From d9373fb974724b2fa5accf42e766cca712d169d2 Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam.soltys@pwgsc-tpsgc.gc.ca>
Date: Thu, 19 Nov 2015 16:45:20 -0800
Subject: Use custom units in wallet

---
 public/js/wallet.coffee | 39 +++++++++++++++++++++++++++------------
 views/users/wallet.html |  4 ++--
 2 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/public/js/wallet.coffee b/public/js/wallet.coffee
index 606c1f7d..ec97bace 100644
--- a/public/js/wallet.coffee
+++ b/public/js/wallet.coffee
@@ -32,25 +32,26 @@ $(->
   )
 
   $('#currency_toggle').click(->
-    if $(this).html() is 'BTC'
-      g.amount = $('#amount').val()
-      $('#amount').val((g.amount * g.exchange).toFixed(2))
+    if $(this).html() is g.user.unit
+      g.amount = parseFloat($('#amount').val()).toFixed(precision())
+      $('#amount').val((g.amount * g.exchange / multiplier()).toFixed(2))
       $(this).html(g.user.currency)
     else
-      amount = $('#amount').val() / g.exchange
-      if Math.abs(g.amount - amount) > 0.00001
-        $('#amount').val(parseFloat(amount).toFixed(8))
+      amount = parseFloat($('#amount').val() * multiplier() / g.exchange).toFixed(precision())
+      if Math.abs(g.amount - amount).toFixed(precision()) > (.000000005 * g.exchange * multiplier()).toFixed(precision())
+        $('#amount').val(amount)
       else
-        $('#amount').val(parseFloat(g.amount).toFixed(8))
+        $('#amount').val(g.amount)
 
-      $(this).html('BTC')
+      $(this).html(g.user.unit)
   )
   
   $('#max').click(->
-    if $('#currency_toggle').html() is 'BTC'
+    if $('#currency_toggle').html() is g.user.unit
       $('#amount').val(g.balance)
     else
-      $('#amount').val((g.balance * g.exchange).toFixed(2))
+      g.amount = parseFloat(g.balance).toFixed(precision())
+      $('#amount').val((g.balance / multiplier() * g.exchange).toFixed(2))
   )
 )
 
@@ -66,6 +67,8 @@ getUser = ->
     g.user = user
     $('#pubkey').val(user.pubkey)
     $('#address').val(user.address)
+    $('#unit').html(user.unit)
+    $('#currency_toggle').html(user.unit)
     $('form').fadeIn()
 
     getExchangeRate()
@@ -130,9 +133,10 @@ getAddresses = ->
 calculateBalance = ->
   balances = JSON.parse(localStorage.getItem(g.user.username)).balances
   balance = balances.reduce (t,s) -> t + s
-  g.balance = (balance / 100000000).toFixed(8)
+  g.balance = (balance * multiplier() / 100000000).toFixed(precision())
+  fiat = (g.balance * g.exchange / multiplier()).toFixed(2)
   $('#balance').html(g.balance)
-  $('#fiat').html("#{(g.balance * g.exchange).toFixed(2)} #{g.user.currency}")
+  $('#fiat').html("#{fiat} #{g.user.currency}")
   $('#amount').val(g.balance)
 
 check_address = (address) ->
@@ -148,3 +152,14 @@ isBip32 = (address) ->
     return true
   catch
     return false
+
+multiplier = ->
+  switch g.user.unit
+    when 'BTC' then 1
+    when 'mBTC' then 1000
+    when 'µBTC' then 1000000
+    when 'bits' then 1000000
+    when 'satoshis' then 100000000
+
+precision = ->
+  9 - multiplier().toString().length
diff --git a/views/users/wallet.html b/views/users/wallet.html
index fac7ac4b..4eb2e633 100644
--- a/views/users/wallet.html
+++ b/views/users/wallet.html
@@ -10,7 +10,7 @@
 
   <div class="form-group">
     <label>Available Balance:</label>
-    <b id="balance" class="lead">0 BTC</b> /
+    <b id="balance" class="lead">0</b> <b id="unit" class="lead"></b> /
     <b id="fiat" class="lead">0</b>
   </div>
 
@@ -27,7 +27,7 @@
           <div class="input-group">
             <input type="number" id="amount" name="amount" class="form-control" />
             <span class="input-group-btn">
-              <button id="currency_toggle" type="button" class="btn">BTC</button>
+              <button id="currency_toggle" type="button" class="btn"></button>
             </span>
             <span class="input-group-btn">
               <button id="max" type="button" class="btn">Max</button>
-- 
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